Nonconvex Compressed Sampling of Natural Images and Applications to Compressed MR Imaging

Table 4

Results on MR images in Figure 4 by three methods (SR = 38.56%, 𝑠=8, 𝑝=2).

Image no.	Method	Exp. result
		SNR	Rel. err.	Iter
Figure 4(a)	CTVCS [6]	33.0915	0.32%	58
	TVCMRI [11]	33.3962	0.31%	81
	HQRCSparET	𝟒𝟖.𝟖𝟔𝟖𝟕	𝟎.𝟕𝟐	62
Figure 4(b)	CTVCS [6]	36.5660	0.27%	56
	TVCMRI [11]	38.5121	0.22%	84
	HQRCSparET	𝟓𝟑.𝟏𝟔𝟔𝟕	𝟎.𝟓𝟐	63
Figure 4(c)	CTVCS [6]	33.9407	0.40%	57
	TVCMRI [11]	35.0528	0.36%	80
	HQRCSparET	𝟓𝟒.𝟑𝟑𝟏𝟗	𝟎.𝟑𝟕	62
Figure 4(d)	CTVCS [6]	33.7718	0.38%	58
	TVCMRI [11]	34.3157	0.35%	79
	HQRCSparET	𝟑𝟕.𝟏𝟑𝟕𝟕	𝟎.𝟐𝟕%	62
Figure 4(e)	CTVCS [6]	27.5838	0.91%	55
	TVCMRI [11]	28.4253	0.79%	81
	HQRCSparET	𝟐𝟗.𝟖𝟒𝟏𝟓	𝟎.𝟕𝟖%	64
Figure 4(f)	CTVCS [6]	30.8622	0.74%	54
	TVCMRI [11]	32.5762	0.61%	76
	HQRCSparET	𝟑𝟓.𝟑𝟑𝟔𝟕	𝟎.𝟓𝟑%	64